is that something certainly the obama administration has been pushing. is that something you support? >> yeah. there's been a lot of confusion, i would say sometimes misinformation about the common core. but it's a far more rigorous standard than what has been used in most of the states. it allows states to pool resources for people like khan academy to cater to more folks. it's much more about the conceptual understanding of core ideas as to opposed to going through a superficial way many ideas. modelled over standards like singapore. so i think it's a positive. >> so what needs time prove ho here? clearly it's not just an issue of money i assume? >> no. not just an issue of money. and at the kahn academy we try to take a step back. it is interesting to look at the pisa scores, to see where these countries rank. but it's also important to kind of take a step back from that. because even while our scores have kind of been middling and sometimes declining up, the level of innovation in the u.s. has been accelerating. if you asked anyone in the world what'